55aaf894e8
support machines having multiple independently numbered PCI domains and don't support reenumeration without ambiguity amongst the devices as seen by the OS and represented by PCI location strings. This includes introducing a function pci_find_dbsf(9) which works like pci_find_bsf(9) but additionally takes a domain number argument and limiting pci_find_bsf(9) to only search devices in domain 0 (the only domain in single-domain systems). Bge(4) and ofw_pcibus(4) are changed to use pci_find_dbsf(9) instead of pci_find_bsf(9) in order to no longer report false positives when searching for siblings and dupe devices in the same domain respectively. Along with this change the sole host-PCI bridge driver converted to actually make use of PCI domain support is uninorth(4), the others continue to use domain 0 only for now and need to be converted as appropriate later on. Note that this means that the format of the location strings as used by pciconf(8) has been changed and that consumers of <sys/pciio.h> potentially need to be recompiled. Suggested by: jhb Reviewed by: grehan, jhb, marcel Approved by: re (kensmith), jhb (PCI maintainer hat)
481 lines
15 KiB
C
481 lines
15 KiB
C
/*-
|
|
* Copyright (c) 1997, Stefan Esser <se@freebsd.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice unmodified, this list of conditions, and the following
|
|
* disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*
|
|
*/
|
|
|
|
#ifndef _PCIVAR_H_
|
|
#define _PCIVAR_H_
|
|
|
|
#include <sys/queue.h>
|
|
|
|
/* some PCI bus constants */
|
|
|
|
#define PCI_DOMAINMAX 65535 /* highest supported domain number */
|
|
#define PCI_BUSMAX 255 /* highest supported bus number */
|
|
#define PCI_SLOTMAX 31 /* highest supported slot number */
|
|
#define PCI_FUNCMAX 7 /* highest supported function number */
|
|
#define PCI_REGMAX 255 /* highest supported config register addr. */
|
|
|
|
#define PCI_MAXMAPS_0 6 /* max. no. of memory/port maps */
|
|
#define PCI_MAXMAPS_1 2 /* max. no. of maps for PCI to PCI bridge */
|
|
#define PCI_MAXMAPS_2 1 /* max. no. of maps for CardBus bridge */
|
|
|
|
typedef uint64_t pci_addr_t;
|
|
|
|
/* Interesting values for PCI power management */
|
|
struct pcicfg_pp {
|
|
uint16_t pp_cap; /* PCI power management capabilities */
|
|
uint8_t pp_status; /* config space address of PCI power status reg */
|
|
uint8_t pp_pmcsr; /* config space address of PMCSR reg */
|
|
uint8_t pp_data; /* config space address of PCI power data reg */
|
|
};
|
|
|
|
struct vpd_readonly {
|
|
char keyword[2];
|
|
char *value;
|
|
};
|
|
|
|
struct vpd_write {
|
|
char keyword[2];
|
|
char *value;
|
|
int start;
|
|
int len;
|
|
};
|
|
|
|
struct pcicfg_vpd {
|
|
uint8_t vpd_reg; /* base register, + 2 for addr, + 4 data */
|
|
char vpd_cached;
|
|
char *vpd_ident; /* string identifier */
|
|
int vpd_rocnt;
|
|
struct vpd_readonly *vpd_ros;
|
|
int vpd_wcnt;
|
|
struct vpd_write *vpd_w;
|
|
};
|
|
|
|
/* Interesting values for PCI MSI */
|
|
struct pcicfg_msi {
|
|
uint16_t msi_ctrl; /* Message Control */
|
|
uint8_t msi_location; /* Offset of MSI capability registers. */
|
|
uint8_t msi_msgnum; /* Number of messages */
|
|
int msi_alloc; /* Number of allocated messages. */
|
|
uint64_t msi_addr; /* Contents of address register. */
|
|
uint16_t msi_data; /* Contents of data register. */
|
|
u_int msi_handlers;
|
|
};
|
|
|
|
/* Interesting values for PCI MSI-X */
|
|
struct msix_vector {
|
|
uint64_t mv_address; /* Contents of address register. */
|
|
uint32_t mv_data; /* Contents of data register. */
|
|
int mv_irq;
|
|
};
|
|
|
|
struct msix_table_entry {
|
|
u_int mte_vector; /* 1-based index into msix_vectors array. */
|
|
u_int mte_handlers;
|
|
};
|
|
|
|
struct pcicfg_msix {
|
|
uint16_t msix_ctrl; /* Message Control */
|
|
uint16_t msix_msgnum; /* Number of messages */
|
|
uint8_t msix_location; /* Offset of MSI-X capability registers. */
|
|
uint8_t msix_table_bar; /* BAR containing vector table. */
|
|
uint8_t msix_pba_bar; /* BAR containing PBA. */
|
|
uint32_t msix_table_offset;
|
|
uint32_t msix_pba_offset;
|
|
int msix_alloc; /* Number of allocated vectors. */
|
|
int msix_table_len; /* Length of virtual table. */
|
|
struct msix_table_entry *msix_table; /* Virtual table. */
|
|
struct msix_vector *msix_vectors; /* Array of allocated vectors. */
|
|
struct resource *msix_table_res; /* Resource containing vector table. */
|
|
struct resource *msix_pba_res; /* Resource containing PBA. */
|
|
};
|
|
|
|
/* config header information common to all header types */
|
|
typedef struct pcicfg {
|
|
struct device *dev; /* device which owns this */
|
|
|
|
uint32_t bar[PCI_MAXMAPS_0]; /* BARs */
|
|
uint32_t bios; /* BIOS mapping */
|
|
|
|
uint16_t subvendor; /* card vendor ID */
|
|
uint16_t subdevice; /* card device ID, assigned by card vendor */
|
|
uint16_t vendor; /* chip vendor ID */
|
|
uint16_t device; /* chip device ID, assigned by chip vendor */
|
|
|
|
uint16_t cmdreg; /* disable/enable chip and PCI options */
|
|
uint16_t statreg; /* supported PCI features and error state */
|
|
|
|
uint8_t baseclass; /* chip PCI class */
|
|
uint8_t subclass; /* chip PCI subclass */
|
|
uint8_t progif; /* chip PCI programming interface */
|
|
uint8_t revid; /* chip revision ID */
|
|
|
|
uint8_t hdrtype; /* chip config header type */
|
|
uint8_t cachelnsz; /* cache line size in 4byte units */
|
|
uint8_t intpin; /* PCI interrupt pin */
|
|
uint8_t intline; /* interrupt line (IRQ for PC arch) */
|
|
|
|
uint8_t mingnt; /* min. useful bus grant time in 250ns units */
|
|
uint8_t maxlat; /* max. tolerated bus grant latency in 250ns */
|
|
uint8_t lattimer; /* latency timer in units of 30ns bus cycles */
|
|
|
|
uint8_t mfdev; /* multi-function device (from hdrtype reg) */
|
|
uint8_t nummaps; /* actual number of PCI maps used */
|
|
|
|
uint32_t domain; /* PCI domain */
|
|
uint8_t bus; /* config space bus address */
|
|
uint8_t slot; /* config space slot address */
|
|
uint8_t func; /* config space function number */
|
|
|
|
struct pcicfg_pp pp; /* pci power management */
|
|
struct pcicfg_vpd vpd; /* pci vital product data */
|
|
struct pcicfg_msi msi; /* pci msi */
|
|
struct pcicfg_msix msix; /* pci msi-x */
|
|
} pcicfgregs;
|
|
|
|
/* additional type 1 device config header information (PCI to PCI bridge) */
|
|
|
|
#define PCI_PPBMEMBASE(h,l) ((((pci_addr_t)(h) << 32) + ((l)<<16)) & ~0xfffff)
|
|
#define PCI_PPBMEMLIMIT(h,l) ((((pci_addr_t)(h) << 32) + ((l)<<16)) | 0xfffff)
|
|
#define PCI_PPBIOBASE(h,l) ((((h)<<16) + ((l)<<8)) & ~0xfff)
|
|
#define PCI_PPBIOLIMIT(h,l) ((((h)<<16) + ((l)<<8)) | 0xfff)
|
|
|
|
typedef struct {
|
|
pci_addr_t pmembase; /* base address of prefetchable memory */
|
|
pci_addr_t pmemlimit; /* topmost address of prefetchable memory */
|
|
uint32_t membase; /* base address of memory window */
|
|
uint32_t memlimit; /* topmost address of memory window */
|
|
uint32_t iobase; /* base address of port window */
|
|
uint32_t iolimit; /* topmost address of port window */
|
|
uint16_t secstat; /* secondary bus status register */
|
|
uint16_t bridgectl; /* bridge control register */
|
|
uint8_t seclat; /* CardBus latency timer */
|
|
} pcih1cfgregs;
|
|
|
|
/* additional type 2 device config header information (CardBus bridge) */
|
|
|
|
typedef struct {
|
|
uint32_t membase0; /* base address of memory window */
|
|
uint32_t memlimit0; /* topmost address of memory window */
|
|
uint32_t membase1; /* base address of memory window */
|
|
uint32_t memlimit1; /* topmost address of memory window */
|
|
uint32_t iobase0; /* base address of port window */
|
|
uint32_t iolimit0; /* topmost address of port window */
|
|
uint32_t iobase1; /* base address of port window */
|
|
uint32_t iolimit1; /* topmost address of port window */
|
|
uint32_t pccardif; /* PC Card 16bit IF legacy more base addr. */
|
|
uint16_t secstat; /* secondary bus status register */
|
|
uint16_t bridgectl; /* bridge control register */
|
|
uint8_t seclat; /* CardBus latency timer */
|
|
} pcih2cfgregs;
|
|
|
|
extern uint32_t pci_numdevs;
|
|
|
|
/* Only if the prerequisites are present */
|
|
#if defined(_SYS_BUS_H_) && defined(_SYS_PCIIO_H_)
|
|
struct pci_devinfo {
|
|
STAILQ_ENTRY(pci_devinfo) pci_links;
|
|
struct resource_list resources;
|
|
pcicfgregs cfg;
|
|
struct pci_conf conf;
|
|
};
|
|
#endif
|
|
|
|
#ifdef _SYS_BUS_H_
|
|
|
|
#include "pci_if.h"
|
|
|
|
/*
|
|
* Define pci-specific resource flags for accessing memory via dense
|
|
* or bwx memory spaces. These flags are ignored on i386.
|
|
*/
|
|
#define PCI_RF_DENSE 0x10000
|
|
#define PCI_RF_BWX 0x20000
|
|
|
|
enum pci_device_ivars {
|
|
PCI_IVAR_SUBVENDOR,
|
|
PCI_IVAR_SUBDEVICE,
|
|
PCI_IVAR_VENDOR,
|
|
PCI_IVAR_DEVICE,
|
|
PCI_IVAR_DEVID,
|
|
PCI_IVAR_CLASS,
|
|
PCI_IVAR_SUBCLASS,
|
|
PCI_IVAR_PROGIF,
|
|
PCI_IVAR_REVID,
|
|
PCI_IVAR_INTPIN,
|
|
PCI_IVAR_IRQ,
|
|
PCI_IVAR_DOMAIN,
|
|
PCI_IVAR_BUS,
|
|
PCI_IVAR_SLOT,
|
|
PCI_IVAR_FUNCTION,
|
|
PCI_IVAR_ETHADDR,
|
|
PCI_IVAR_CMDREG,
|
|
PCI_IVAR_CACHELNSZ,
|
|
PCI_IVAR_MINGNT,
|
|
PCI_IVAR_MAXLAT,
|
|
PCI_IVAR_LATTIMER,
|
|
};
|
|
|
|
/*
|
|
* Simplified accessors for pci devices
|
|
*/
|
|
#define PCI_ACCESSOR(var, ivar, type) \
|
|
__BUS_ACCESSOR(pci, var, PCI, ivar, type)
|
|
|
|
PCI_ACCESSOR(subvendor, SUBVENDOR, uint16_t)
|
|
PCI_ACCESSOR(subdevice, SUBDEVICE, uint16_t)
|
|
PCI_ACCESSOR(vendor, VENDOR, uint16_t)
|
|
PCI_ACCESSOR(device, DEVICE, uint16_t)
|
|
PCI_ACCESSOR(devid, DEVID, uint32_t)
|
|
PCI_ACCESSOR(class, CLASS, uint8_t)
|
|
PCI_ACCESSOR(subclass, SUBCLASS, uint8_t)
|
|
PCI_ACCESSOR(progif, PROGIF, uint8_t)
|
|
PCI_ACCESSOR(revid, REVID, uint8_t)
|
|
PCI_ACCESSOR(intpin, INTPIN, uint8_t)
|
|
PCI_ACCESSOR(irq, IRQ, uint8_t)
|
|
PCI_ACCESSOR(domain, DOMAIN, uint32_t)
|
|
PCI_ACCESSOR(bus, BUS, uint8_t)
|
|
PCI_ACCESSOR(slot, SLOT, uint8_t)
|
|
PCI_ACCESSOR(function, FUNCTION, uint8_t)
|
|
PCI_ACCESSOR(ether, ETHADDR, uint8_t *)
|
|
PCI_ACCESSOR(cmdreg, CMDREG, uint8_t)
|
|
PCI_ACCESSOR(cachelnsz, CACHELNSZ, uint8_t)
|
|
PCI_ACCESSOR(mingnt, MINGNT, uint8_t)
|
|
PCI_ACCESSOR(maxlat, MAXLAT, uint8_t)
|
|
PCI_ACCESSOR(lattimer, LATTIMER, uint8_t)
|
|
|
|
#undef PCI_ACCESSOR
|
|
|
|
/*
|
|
* Operations on configuration space.
|
|
*/
|
|
static __inline uint32_t
|
|
pci_read_config(device_t dev, int reg, int width)
|
|
{
|
|
return PCI_READ_CONFIG(device_get_parent(dev), dev, reg, width);
|
|
}
|
|
|
|
static __inline void
|
|
pci_write_config(device_t dev, int reg, uint32_t val, int width)
|
|
{
|
|
PCI_WRITE_CONFIG(device_get_parent(dev), dev, reg, val, width);
|
|
}
|
|
|
|
/*
|
|
* Ivars for pci bridges.
|
|
*/
|
|
|
|
/*typedef enum pci_device_ivars pcib_device_ivars;*/
|
|
enum pcib_device_ivars {
|
|
PCIB_IVAR_DOMAIN,
|
|
PCIB_IVAR_BUS
|
|
};
|
|
|
|
#define PCIB_ACCESSOR(var, ivar, type) \
|
|
__BUS_ACCESSOR(pcib, var, PCIB, ivar, type)
|
|
|
|
PCIB_ACCESSOR(domain, DOMAIN, uint32_t)
|
|
PCIB_ACCESSOR(bus, BUS, uint32_t)
|
|
|
|
#undef PCIB_ACCESSOR
|
|
|
|
/*
|
|
* PCI interrupt validation. Invalid interrupt values such as 0 or 128
|
|
* on i386 or other platforms should be mapped out in the MD pcireadconf
|
|
* code and not here, since the only MI invalid IRQ is 255.
|
|
*/
|
|
#define PCI_INVALID_IRQ 255
|
|
#define PCI_INTERRUPT_VALID(x) ((x) != PCI_INVALID_IRQ)
|
|
|
|
/*
|
|
* Convenience functions.
|
|
*
|
|
* These should be used in preference to manually manipulating
|
|
* configuration space.
|
|
*/
|
|
static __inline int
|
|
pci_enable_busmaster(device_t dev)
|
|
{
|
|
return(PCI_ENABLE_BUSMASTER(device_get_parent(dev), dev));
|
|
}
|
|
|
|
static __inline int
|
|
pci_disable_busmaster(device_t dev)
|
|
{
|
|
return(PCI_DISABLE_BUSMASTER(device_get_parent(dev), dev));
|
|
}
|
|
|
|
static __inline int
|
|
pci_enable_io(device_t dev, int space)
|
|
{
|
|
return(PCI_ENABLE_IO(device_get_parent(dev), dev, space));
|
|
}
|
|
|
|
static __inline int
|
|
pci_disable_io(device_t dev, int space)
|
|
{
|
|
return(PCI_DISABLE_IO(device_get_parent(dev), dev, space));
|
|
}
|
|
|
|
static __inline int
|
|
pci_get_vpd_ident(device_t dev, const char **identptr)
|
|
{
|
|
return(PCI_GET_VPD_IDENT(device_get_parent(dev), dev, identptr));
|
|
}
|
|
|
|
static __inline int
|
|
pci_get_vpd_readonly(device_t dev, const char *kw, const char **identptr)
|
|
{
|
|
return(PCI_GET_VPD_READONLY(device_get_parent(dev), dev, kw, identptr));
|
|
}
|
|
|
|
/*
|
|
* Check if the address range falls within the VGA defined address range(s)
|
|
*/
|
|
static __inline int
|
|
pci_is_vga_ioport_range(u_long start, u_long end)
|
|
{
|
|
|
|
return (((start >= 0x3b0 && end <= 0x3bb) ||
|
|
(start >= 0x3c0 && end <= 0x3df)) ? 1 : 0);
|
|
}
|
|
|
|
static __inline int
|
|
pci_is_vga_memory_range(u_long start, u_long end)
|
|
{
|
|
|
|
return ((start >= 0xa0000 && end <= 0xbffff) ? 1 : 0);
|
|
}
|
|
|
|
/*
|
|
* PCI power states are as defined by ACPI:
|
|
*
|
|
* D0 State in which device is on and running. It is receiving full
|
|
* power from the system and delivering full functionality to the user.
|
|
* D1 Class-specific low-power state in which device context may or may not
|
|
* be lost. Buses in D1 cannot do anything to the bus that would force
|
|
* devices on that bus to lose context.
|
|
* D2 Class-specific low-power state in which device context may or may
|
|
* not be lost. Attains greater power savings than D1. Buses in D2
|
|
* can cause devices on that bus to lose some context. Devices in D2
|
|
* must be prepared for the bus to be in D2 or higher.
|
|
* D3 State in which the device is off and not running. Device context is
|
|
* lost. Power can be removed from the device.
|
|
*/
|
|
#define PCI_POWERSTATE_D0 0
|
|
#define PCI_POWERSTATE_D1 1
|
|
#define PCI_POWERSTATE_D2 2
|
|
#define PCI_POWERSTATE_D3 3
|
|
#define PCI_POWERSTATE_UNKNOWN -1
|
|
|
|
static __inline int
|
|
pci_set_powerstate(device_t dev, int state)
|
|
{
|
|
return PCI_SET_POWERSTATE(device_get_parent(dev), dev, state);
|
|
}
|
|
|
|
static __inline int
|
|
pci_get_powerstate(device_t dev)
|
|
{
|
|
return PCI_GET_POWERSTATE(device_get_parent(dev), dev);
|
|
}
|
|
|
|
static __inline int
|
|
pci_find_extcap(device_t dev, int capability, int *capreg)
|
|
{
|
|
return PCI_FIND_EXTCAP(device_get_parent(dev), dev, capability, capreg);
|
|
}
|
|
|
|
static __inline int
|
|
pci_alloc_msi(device_t dev, int *count)
|
|
{
|
|
return (PCI_ALLOC_MSI(device_get_parent(dev), dev, count));
|
|
}
|
|
|
|
static __inline int
|
|
pci_alloc_msix(device_t dev, int *count)
|
|
{
|
|
return (PCI_ALLOC_MSIX(device_get_parent(dev), dev, count));
|
|
}
|
|
|
|
static __inline int
|
|
pci_remap_msix(device_t dev, int count, const u_int *vectors)
|
|
{
|
|
return (PCI_REMAP_MSIX(device_get_parent(dev), dev, count, vectors));
|
|
}
|
|
|
|
static __inline int
|
|
pci_release_msi(device_t dev)
|
|
{
|
|
return (PCI_RELEASE_MSI(device_get_parent(dev), dev));
|
|
}
|
|
|
|
static __inline int
|
|
pci_msi_count(device_t dev)
|
|
{
|
|
return (PCI_MSI_COUNT(device_get_parent(dev), dev));
|
|
}
|
|
|
|
static __inline int
|
|
pci_msix_count(device_t dev)
|
|
{
|
|
return (PCI_MSIX_COUNT(device_get_parent(dev), dev));
|
|
}
|
|
|
|
device_t pci_find_bsf(uint8_t, uint8_t, uint8_t);
|
|
device_t pci_find_dbsf(uint32_t, uint8_t, uint8_t, uint8_t);
|
|
device_t pci_find_device(uint16_t, uint16_t);
|
|
|
|
/*
|
|
* Can be used by MD code to request the PCI bus to re-map an MSI or
|
|
* MSI-X message.
|
|
*/
|
|
int pci_remap_msi_irq(device_t dev, u_int irq);
|
|
|
|
/* Can be used by drivers to manage the MSI-X table. */
|
|
int pci_pending_msix(device_t dev, u_int index);
|
|
|
|
int pci_msi_device_blacklisted(device_t dev);
|
|
|
|
#endif /* _SYS_BUS_H_ */
|
|
|
|
/*
|
|
* cdev switch for control device, initialised in generic PCI code
|
|
*/
|
|
extern struct cdevsw pcicdev;
|
|
|
|
/*
|
|
* List of all PCI devices, generation count for the list.
|
|
*/
|
|
STAILQ_HEAD(devlist, pci_devinfo);
|
|
|
|
extern struct devlist pci_devq;
|
|
extern uint32_t pci_generation;
|
|
|
|
#endif /* _PCIVAR_H_ */
|